Blue Sea AC Isolation 2-Column 10-Position Panel Back Cover
Blue Sea AC Isolation 2-Column 10-Position Panel Back Cover
ABYC Compliant Rear Insulation for Toggle-Style Circuit Breaker Panels

DESCRIPTION
Reliable Rear Insulation and Mechanical Protection for Electrical Switchboards
Managing complex electrical systems in marine vessels, off-grid setups, and custom recreational vehicles requires strict adherence to safety protocols. When installing circuit breaker panels through bulkheads or into storage compartments, the exposed rear terminals pose a significant hazard. The Blue Sea Systems BS-4031B AC Isolation Back Cover is engineered to resolve this exact issue, providing a robust physical barrier that shields live AC terminals from accidental contact and mechanical damage.
Essential Safety for Confined Storage Spaces and Lockers
In many boats, caravans, and service vehicles, the rear of the electrical distribution panel protrudes directly into a storage locker, cabinet, or utility bay. As vessels pitch on the water or vehicles travel over corrugated Australian tracks, stowed gear can easily shift. If loose items, tools, or conductive materials strike the back of an unprotected circuit breaker panel, it can result in damaged wiring, dislodged terminals, short circuits, or severe electrical shock hazards during maintenance.
By enclosing the rear of a compatible 2-column, 10-position panel, this cover provides comprehensive electrical insulation and mechanical deflection. It ensures that shifting cargo cannot compromise the integrity of your electrical terminations, while simultaneously protecting maintenance personnel who may be reaching into dimly lit lockers near the rear of the helm or cabin.
Compliance with Marine and Off-Grid Electrical Standards
When designing or upgrading power distribution boards that integrate both alternating current (AC) and direct current (DC) loads, isolating the higher-voltage AC components is critical. This isolation cover meets the strict American Boat and Yacht Council (ABYC) requirements for panels that feature combined AC and DC loads. Utilizing purpose-built, compliant enclosures reduces the risk of dangerous cross-system faults and helps ensure your installation passes professional marine and automotive electrical inspections.
Key Features and Technical Benefits
- Comprehensive Electrical Insulation: Completely shields exposed rear AC terminals, busbars, and wiring from accidental human contact or conductive debris.
- Mechanical Impact Protection: Safeguards delicate circuit breaker backs and terminal screws that protrude into active storage lockers and utility spaces.
- Customisable Cable Routing: Constructed from a specialised lightweight, textured material that can be easily drilled or modified on-site for custom wire entry and exit points.
- Regulatory Compliance: Engineered to meet ABYC safety requirements for electrical panels combining AC and DC distribution.
- Precision Fitment: Specifically moulded to suit 2-column, 10-position configurations without adding excessive bulk or weight to the bulkhead.
Installation Flexibility and System Compatibility
Unlike rigid metal enclosures that are heavy, conductive, and difficult to modify in the field, this back cover is manufactured from a durable, lightweight insulating material. Installers can easily drill through the casing using standard hole saws or drill bits to create precise entry and exit ports that match the exact routing of the vessel or vehicle wiring harness. This adaptability supports cleaner cable management and reduces strain on the panel terminations.
Important Compatibility Note: This rear isolation cover is designed exclusively for use with Blue Sea Systems toggle-style circuit breaker panels configured in a 2-column, 10-position layout. It is not suitable for flat rocker-style panels or incompatible third-party switchboards.
Secure Your Electrical Distribution System
Eliminate the risks of exposed rear wiring and bring your combined AC/DC switchboard up to professional marine standards. Add the Blue Sea Systems AC Isolation Back Cover to your installation kit today for a safer, cleaner, and fully protected electrical setup.
SKU: BS-4031B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Cover |
| Configuration | 2 columns, 10 positions |
| Function | Electrical insulation and mechanical protection for panel backs |
| Material description | Lightweight material, easily drilled for wire entrance and exit |
| Compatibility | Blue Sea Systems toggle-style circuit breaker panels only |
| Requirements | Meets ABYC requirements for panels with combined AC and DC |
| SKU: | BS-4031B |
| Model #: | BS-4031B |
| MPN: | BS-4031B |
| Package weight: | 0.36 kg |
| Package length: | 0.36 m |
| Package width: | 0.24 m |
| Package height: | 0.08 m |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

